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Finding the Fourth Proportional to 230.39, 345.47 and 157.37

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Solution

The fourth proportional to 230.39, 345.47 and 157.37 is: 235.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.39 : 345.47 = 157.37 : x
  2. Step 2: Convert to fraction form
    230.39/345.47 = 157.37/x
  3. Step 3: Cross multiply
    230.39x = 345.47 × 157.37
  4. Step 4: Simplify right side
    230.39x = 54,366.69
  5. Step 5: Solve for x
    x = 54,366.69/230.39
  6. Step 6: Final answer
    x = 235.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.